Id	Element	Ion	Binding family	Amino acids or nucleotide residues names	All bound residues	Is homomer	Number of bound amino acids or nucleotide residues	Number of all bound residues	Number of coordinating chains	Representative
2Z6M-CA-7	CA	Ca²⁺	D2E2	ASP.GLU.	ASP.GLU.	✔	4	4	2	✘
2Z6M-CA-8	CA	Ca²⁺	D2E2	ASP.GLU.	ASP.GLU.	✔	4	4	2	✘
4LP6-ZN-1	ZN	Zn²⁺	D1E1	ASP.GLU.	ASP.GLU.HOH.	✔	2	3	2	✔
4M1C-ZN-1	ZN	Zn²⁺	E1F1	GLU.PHE.	GLU.PHE.	✘	2	2	2	✔
4LUX-ZN-1	ZN	Zn²⁺	C4	CYS.	CYS.	✔	4	4	2	✘
4LCZ-NA-1	NA	Na⁺	E1S1	GLU.SER.	GLU.HOH.SER.	✔	2	3	2	✔
4LEP-ZN-1	ZN	Zn²⁺	N2	ASN.	ASN.	✔	2	2	2	✔
4LJQ-ZN-1	ZN	Zn²⁺	H4	HIS.	HIS.	✔	4	4	2	✔
4KS6-ZN-1	ZN	Zn²⁺	E1X1	DPP.GLU.	DPP.GLU.	✘	2	2	2	✔
4L3K-NI-1	NI	Ni²⁺	H2	HIS.	HIS.	✔	2	2	2	✔
4KTX-ZN-1	ZN	Zn²⁺	H2X1	DPP.HIS.	DPP.HIS.	✘	3	3	2	✔
2V9F-ZN-1	ZN	Zn²⁺	E2	GLU.	GLU.	✔	2	2	2	✔
2V9F-ZN-2	ZN	Zn²⁺	E2	GLU.	GLU.	✔	2	2	2	✘
3BOO-ZN-1	ZN	Zn²⁺	E1X1	CSO.GLU.	CSO.GLU.	✘	2	2	2	✔
3C8A-ZN-1	ZN	Zn²⁺	E1R1	ARG.GLU.	ARG.GLU.	✘	2	2	2	✔
3C8B-ZN-1	ZN	Zn²⁺	E1R1	ARG.GLU.	ARG.GLU.	✘	2	2	2	✔
3BVX-ZN-1	ZN	Zn²⁺	D1X1	ASP.MAN.	ASP.MAN.	✘	2	2	2	✔
3C89-ZN-1	ZN	Zn²⁺	E1R1	ARG.GLU.	ARG.GLU.	✘	2	2	2	✘
4A47-ZN-1	ZN	Zn²⁺	C4	CYS.	CYS.	✔	4	4	2	✔
4AA1-ZN-1	ZN	Zn²⁺	E1I1	GLU.ILE.	GLU.ILE.	✘	2	2	2	✔